Arraangers are a dying breed, as the demograph has changed and the youngsters no longer want what an arranger offers.
Just like home organs were extreamly popular (There was almost a shop on every corner), sales started to drop off as the demograh changed and the spin off of the easy play features on home organs spawned the arranger. (There used to be many home organ manufaxtures, however we are now down to 3 in western markets)
The amount of larger arranger manufacture left are very small compared to how it used to be, plus new arranger replacemnets are getting longer, as the demograph just isen't there.
Sorry to say but the Arranger (Like the home organ) heyday has passed.

Bill